Part of a holder for drilling tool



1. Part of a holder for drilling tool

1.1 : Perspective

1.2 : Front

1.3 : Back

1.4 : Left

1.5 : Right

1.6 : Top

1.7 : Bottom

Portions shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for part of a holder for drilling tool, as shown and described. 